Fire-extinguisher.



G. A; THORNTON. FIRE EXTINGUISHER.

APPLIOATION FILED JULY 31, 1912.

Patented June 3, 1913.

WITNESSES. WC?

ATTEJRNEY.

1 STATEdtd sis-oasis a. trnonn'ron, or. rawruonnr, nnonn ISLAND, AssreNon-or ONE-HALE ro' anonrn r. runes, or onansron, nnonu ISLAND.

FIRE-EXTINGUISI-IER.

specification pt Letters Ilatent.

Patented June 3, 1913.

Application filed July 31,1912; .Serial-rljo. 712,410.

Pawtucket, in the county of Providence.

and State of Rhode Island, have invented certain new and 'useful Improvements in Fire-Extinguishers, of which the following is a specification.

My invention relates to automatic fire extinguishers and its essential. objects are to automatically distribute aliquid fire extinguishing material when the surrounding temperature has attained a predetermined degree; also to. automatically commingle the chemicals and' liquids intended to be discharged from the extinguisher; and to attain these objects in a simple and inexpensive structure.

To the above ends essentially my invention consists in such parts and such combinations of parts as fall Within the scope of the appended claims'.

In the accompanying drawings, Figure 1 is a side elevation of my novel extinguisher, Figs: 2 and 3, vertical central sections of the same in closed and open positions, respectively,Fig. 4., a section on line no a: of Fig. 3, Fig. 5, a plan view of the bottle and its support, Fig. 6, a detailedside elevation of the distributing member, and Fig. 7, a

side elevation of the housing member for the distributing member. I

Like reference characters indicate like parts throughout the views.

In its illustrated form my invention consists of a casing comprising a hemispherically shaped hollow, body portion 1, and a base portion 2, either integral with the portion 1 or engaged therewith in any suitable manner such as by a horizontally, disposed, marginal flange 3 upon the portion '1 overlapping the inner face of the member 2. The portion 2 is attached to the ceiling 4 or other surface to which the device is intended to be attached by screws 5 passing through perforations 6 in the member 2.

Integral with the body 1 edits central por-' tion is the ring 7 provided with internal threads 8,'which ring bounds a central opening in the lower portion'of the casing.

hollow housing 9 of cylindrical shape has an opening 10 in its upper portion, and a plurality of openings 11 in its sides and is provided with threads 12in its lower portion adapted to engage the threads 8 of the ring 7. Slidably mounted inthe opening. 10 of the member 9 IS a post 13, in the present instance hollow, provided with an annular shoulder let at or near its upper end. This post is integral with or fixed to the upper plate-16 of a cage having a lower plate 17 connected with the first plate by. vertical rods or braces 18.

The cage and post are slidable in the member 9, and when. the cage is in elevated position the upper face of the plate 17' abuts against the lower face of the ring 7' and is normally held inengagement therewith by solder 20 having a fusibility' at a predetermined degree of heat determined upon for release. The plate 16is provided with a plurality of openings 21. The cage is normally downwardly pressed by means of a helical spring 22 surrounding the post 13 pressing with one end against the upper end of the member 9 and with itsother end'pressing against the plate 16 of the I cage member. Integral with or fixed to the ulterior of the casmg 1s a horizontal bracket consisting in the present instance of paral lel arms 23 located in the plane slightly higher than the plane of the top of the post 13, and provided with perforations 24: adapted to receive lateral trunnions or pivots 25 upon the opposite sides of the flat bottle 27 which has an upright neck 28 upon its forward portion extending upwardly from its top face. The trunnions 25 are located near therear end of the bottle. The lower forward face of the bottle. 27 rests upon the upper end of the post 13 in a substantially horizontal position' The body 1 is filled with a liquid 30 with which it is desired to mix a chemical contained in the bottle 27.

The intermixing'of well known chemicals with proper liduids in fire extinguishers of this character is well known and has heretofore been performed manually when fire has occurred. In .my structure the intermixture is performed automatically by the discharge, at a predetermined degree of heat, of the'chemicals from the bottle into the liquid in the body 1, thus. The heat fuses the solder 20 thereby releasing the cage which is forced by the spring 22 downwardly until stopped by the shoulder 14 coming in contact with the upper end of the member 9. -The descent-.of the post or stem 13 removes the support of the bottle 27, and by gravity the latter gradually swings downwardly until it assumes a vertical position such as shown in Fig. 3 with the neck 28 horizontally disposed, gradually thus comn'xingling the chemicals in the bottle With the liquid 30 in the l;)()( y 1. This creates the necessary smothering chemical mixture required in such an apparatus. The mixture passes inwardly through the openings 11 in wvith a central opening, of a housing in the opening provided with an 0})ening in its top,

a cage slidably mounted in the housing,

a post upon the cage extending through the last mentioned opening. solder unlting. the

with the body, a distributing member in the cage, a bracket in the body, and a bottle pivotally connected with the bracket and normally resting upon the post.

2. In an automatic fire extinguisher, the combination with a body adapted to hold a liquid and provided with an opening, of a housing within the body fixed in the opening and provided with an opening in its top, a cage 'slidably mounted in the housing,

a post upon the cage extending through the opening in the housing and provided with an annular shoulder exterior. of the housing, a spring upon the post intermediate the housing and the cage, a distributing member mounted in the cage, a bracket in the body, and a bottle pivotally mounted in the bracket-and resting upon the end of the post.

3. In an automatic fire extinguisher, the combination with a body, a housing fixed ther in, a cage slid-ably mounted in the hous- .tion by the latter.

noes r76 ing, a post upon the cage extending through an opening in the housing, a distributing member rotatably mounted in the cage and carried by said post, a spring upon the post normallytending to force the cage outward and a bottle pivotally mounted within the body and normally resting in upright position .upon said post.

4. In an automatic fire extinguisher, the combination with abody adapted to hold a liquid and provided with'an opening, of a housing Within the body fixed in the opening and provided with an opening in its top, a cage slidably mounted in the housing, a post upon the cage extending through the o 'iening in the housing, spring means in the housing for downwardly pressing the cage, a distributing member mounted 'in the ca e, a bracket in the body, and a bottle pivotally mounted in the bracket and resting upon the post. I

5. In an automatic fire extinguisher,-the combination of a body adapted to hold a liquid and provided with an opening, a slidable bearing member fixed in the opening 'by solder fusible at a predetcrn'lined tem- 'perature, and a receptaclepivotally mount- ,ed at ne end within the body independent end supported by the latter. 6. In an automatic fire extinguisher, the

oisaid slidable member and having its free combination of a body adapted to. hold a liquid and provided with an opening, a slidable bearing member fixed to the-body in the opening by solder fusible at a predetermined temperature, a distributing member mounted in the bearing member, and a receptacle pivotally mounted at one end within the body independentof said slidable,

member and supported in horizontal posiln testimony wheicof I have affixed my signature 1n presence of two witnesses. GEORGE A. TI-IORNTON. Witnesses:

llonn'rio lfil. Bnrmows,

Finn) lV. PERKINS.. 

